private RecyclerView mRecyclerView;

mRecyclerView = (RecyclerView) findViewById(R.id.list);
mRecyclerView.setLayoutManager(new GridLayoutManager(this, 7));

<android.support.v7.widget.RecyclerView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="8dp"
    android:clipToPadding="false">

</android.support.v7.widget.RecyclerView>

<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
card_view:cardCornerRadius="5dp"
card_view:cardElevation="2dp"
card_view:contentPadding="10dp">
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:text="@string/text"
        android:layout_centerVertical="true"
        android:textColor="@color/primary_text_default_material_light"
        android:textSize="16sp"/>
</RelativeLayout>